function change_img()
{
	var i=0;
	setInterval(function(){
		i++;
		if(i>3)
		{	i=1;}
	var y=document.getElementsByTagName("body");
	var m="url(00"+i+".jpg)";
	//console.log(y[0].style);
	y[0].style.backgroundImage=m;
	

		
		},3000);	
}
function mOver(obj){
	var i=16;
	var p=setInterval(function(){
		
		i++;
		obj.style.padding="50% "+i+"px";
		console.log(obj);
      if(i>=60)
	  { clearInterval(p);}
	},10);
	
	
	
}
function mOut(obj){

	obj.style.padding="50% 16px";
}